Taking to Instagram, the Younger star revealed her little girl was born on Thursday October 25th at the couple's Los Angeles home.
"Banks Violet Bair❤️ this little bit has fully stolen our hearts!" the mother-of-two wrote. "She joined our world at home on Thursday afternoon and is absolute magic ✨"
Little Banks is the couple's first child together and Hilary's 6-year-old son Luca Comrie is now a big brother.
Congratulations to the family-of-four!